From patchwork Fri Jun 23 13:00:51 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre Yves MORDRET X-Patchwork-Id: 780011 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3wvJZr3734z9s3T for ; Fri, 23 Jun 2017 23:05:08 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754409AbdFWNEY (ORCPT ); Fri, 23 Jun 2017 09:04:24 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:35569 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754354AbdFWNER (ORCPT ); Fri, 23 Jun 2017 09:04:17 -0400 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v5NCxKoH017490; Fri, 23 Jun 2017 15:01:19 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-.pphosted.com with ESMTP id 2b8d40xyex-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 23 Jun 2017 15:01:19 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 5C31031; Fri, 23 Jun 2017 13:01:18 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node2.st.com [10.75.127.14]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 323432407; Fri, 23 Jun 2017 13:01:18 +0000 (GMT) Received: from localhost (10.75.127.44) by SFHDAG5NODE2.st.com (10.75.127.14) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Fri, 23 Jun 2017 15:01:17 +0200 From: Pierre-Yves MORDRET To: Vinod Koul , Rob Herring , Mark Rutland , Maxime Coquelin , Alexandre Torgue , Russell King , Dan Williams , "M'boumba Cedric Madianga" , Fabrice GASNIER , Herbert Xu , Fabien DESSENNE , Amelie Delaunay , Pierre-Yves MORDRET , , , , Subject: [PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle STM32 DMAMUX Date: Fri, 23 Jun 2017 15:00:51 +0200 Message-ID: <1498222853-11110-4-git-send-email-pierre-yves.mordret@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1498222853-11110-1-git-send-email-pierre-yves.mordret@st.com> References: <1498222853-11110-1-git-send-email-pierre-yves.mordret@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.44] X-ClientProxiedBy: SFHDAG5NODE3.st.com (10.75.127.15) To SFHDAG5NODE2.st.com (10.75.127.14) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-06-23_07:, , signatures=0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch adds an optional property needed for STM32 DMA controller addressed via STM32 DMAMUX. Signed-off-by: M'boumba Cedric Madianga Signed-off-by: Pierre-Yves MORDRET --- Version history: v2: * Typo fix --- --- Documentation/devicetree/bindings/dma/stm32-dma.txt | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/dma/stm32-dma.txt b/Documentation/devicetree/bindings/dma/stm32-dma.txt index 4408af6..340c918 100644 --- a/Documentation/devicetree/bindings/dma/stm32-dma.txt +++ b/Documentation/devicetree/bindings/dma/stm32-dma.txt @@ -16,6 +16,9 @@ Optional properties: - resets: Reference to a reset controller asserting the DMA controller - st,mem2mem: boolean; if defined, it indicates that the controller supports memory-to-memory transfer +- st,dmamux: boolean; if defined, it indicates that the controller is behind a + DMA multiplexer. In that case, using dma instances doesn't work for DMA + clients. They have to use dma-router instances. Example: @@ -39,7 +42,7 @@ Example: * DMA client DMA clients connected to the STM32 DMA controller must use the format -described in the dma.txt file, using a five-cell specifier for each +described in the dma.txt file, using a four-cell specifier for each channel: a phandle to the DMA controller plus the following four integer cells: 1. The channel id